Bosch rexroth MBT, Руководство пользователя

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M
max
Maximum torque
M
N
Rated torque
M
0
Torque for speeds n ~ 0 Hz but n > 0.1 Hz
M
0
* To avoid damaged winding in standstill operation, limit the cur‐
rent or the operation duration. The following applies: M
0
= M
0
/
√²
① Maximum speed at maximum torque
② Rated speed
③ Maximum speed
④ When using the motor in this operating range, observe the
notes under chapter 9.8 "Motor temperature monitoring" on
page 277
Fig. 4-2: Example characteristic curve MBT
The maximum torque M
max
is available up to the velocity n
Mmax
. When the ve‐
locity increases, the available DC bus voltage is reduced by the velocity-de‐
pendent back electromotive force of the motor. This leads to a reduction of
the maximum torque with rising velocity.
For deviating connection or DC bus voltages, the specified characteristic
curves can be converted - in linear form - according to the existing voltages.
U
DCxxx
New DC bus voltage
Fig. 4-3: Conversion example
Conversion torque to DC bus volt‐
age 750V
DC
Fig. 4-4: Example conversion to DC bus voltage 750 V
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Technical data
MBT High Synchronous Torque Motors
Bosch Rexroth AG R911298798_Edition 08